Harper joins 'Dancing With the Stars' competition

NEW YORK (AP) - Valerie Harper leads a class of 12 in the upcoming 17th season of "Dancing With the Stars."

The cast was revealed Wednesday on ABC. The show has reached an increasingly older audience, but it has added more youth with reality stars Nicole "Snooki" Polizzi of "Jersey Shore" and Ozzy's kid Jack Osbourne.

Harper has defied odds with her survival since being diagnosed earlier this year with brain cancer.